Areas of Interest
My research focuses on two fields of theoretical astrophysics: gamma-ray
bursts and dust formation
Gamma-ray bursts are the brightest explosions in the Universe after the
Big Bang. Their set off out to the most remote distances in the universe
when a massive, fast spinning star reaches the end of its normal life and
its core implodes into a black hole. I use the fastest computer to
simulate the initial tens of second of the explosion, trying to understand
how the energy is released, how is transported and radiated.
How chemistry makes few molecules to aggregate and form a seed particle
that can grow into a dust grain is still a poorly understood problem. I
use the kinematic model of aggregation to study how the growth and
evaporation of proto-grains leads to the formation of stable particles,
and what compounds are formed in different physical conditions.
Recent Publications
X-ray flares from propagation instabilities in long gamma-ray burst jets
Davide Lazzati, C. H. Blackwell, B. J. Morsony, and M. C. Begelman
Monthly Notices of the Royal Astronomical Society (2011)
Thermal fluctuations and nanoscale effects in the nucleation of carbonaceous dust grains
Adam Keith and Davide Lazzati
Monthly Notices of the Royal Astronomical Society
(2011)
Non-thermal Emission from the Photospheres of Gamma-ray Burst Outflows. I. High-Frequency Tails
Davide Lazzati and M. C. Begelman
The Astrophysical Journal (2010)
Short-duration Gamma-ray Bursts From Off-axis Collapsars
Davide Lazzati, B. J. Morsony, and M. C. Begelman
The Astrophysical Journal
(2010)
Polarization Signature of Gamma-Ray Bursts from Fragmented Fireballs
Davide Lazzati and Mitchell C. Begelman
The Astrophysical Journal Letters
(2009)
Very High Efficiency Photospheric Emission in Long-Duration Gamma-Ray Bursts
Davide Lazzati, B. J. Morsony, and M. C. Begelman
The Astrophysical Journal Letters
(2009)
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